docs: def hash_evidence(text: str, type: str, reference: str) -> str:
      """Create a hash for an evidence and its citation.
  
      :param text: The evidence text
      :param type: The corresponding citation type
      :param reference: The citation reference
      """
      s = u'{type}:{reference}:{text}'.format(type=type, reference=reference, text=text)
      return hashlib.sha512(s.encode('utf8')).hexdigest()